Polynomial-to-Pade coefficient conversion

版本 1.0.2 (3.2 KB) 作者: Kenneth Johnson
poly2pade converts polynomial coefficients to a Pade approximant's numerator and denominator coefficients.
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更新时间 2024/9/28

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[a,b] = poly2pade(c,N);
Given series coefficents c(1:M+N+1), find coefficients a(1:M+1) and b(1:N+1) to fit the rational approximation
(a(1)+a(2)*x+...+a(M+1)*x^M)/(b(1)+b(2)*x+...+b(N+1)*x^N) = c(1)+c(2)*x+...+c(M+N+1)*x^(M+N)+Ox^(M+N+1)
This replaces padecoef.m: https://www.mathworks.com/matlabcentral/fileexchange/114835-pade-coefficients The function name is changed to avoid conflict with https://www.mathworks.com/help/matlab/ref/padecoef.html Also, the implementation has been revised to use SVD to handle ill-conditioned problems.

引用格式

Kenneth Johnson (2024). Polynomial-to-Pade coefficient conversion (https://www.mathworks.com/matlabcentral/fileexchange/170746-polynomial-to-pade-coefficient-conversion), MATLAB Central File Exchange. 检索来源 .

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参考作品: Padé coefficients

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版本 已发布 发行说明
1.0.2

bug fix in err calculation
1.0.1

Enable parallel calculations. Apply auto-scaling. Optionally return fit error.
1.0.0